Transport for London (TfL) have published a report giving the impact of the new East-West and North-South Cycle Superhighways. Although these have attracted large numbers of cyclists, they have also led to major delays for motor vehicles. For the latter, some journeys across London take 15 minutes longer (e.g. as much as 50% longer). This is particularly so in the evening peak rush-hour on the eastbound journey. This is mainly due to removal of one traffic lane.
Comment: Yes this was one of the most ill-conceived changes to the London road network one could imagine. It is was introduced without any justification by a proper cost/benefit analysis and by a Mayor keen on cycling. It just demonstrates what can happen when so much power is put in the hands of one person with little democratic control over what they do. Who would have thought when he was elected that he would promote such an ill-conceived and damaging scheme.